**Replication Materials for:
**Messaging, Policy, and “Credible” Votes: Do Members of Congress Vote **Differently When Policy Is on the Line?

**By Thomas R. Gray and Jeffery A. Jenkins

**March 15, 2022

**Ike-Era Replication File

**Load Ike_Years_House_Data.dta

**Figure 9; graphical elements customized for paper presentation**
sort xd
graph twoway rarea xd x yd, horizontal legend(off) || rarea xsd x ysd, horizontal || rarea xr x yr, horizontal || rarea xrf x yrf, horizontal || rarea xsdf x ysdf, horizontal|| rarea xdf x ydf, horizontal

**Figure 10; graphical elements customized for paper presentation**
graph twoway scatter full pos, legend(off) mcolor(black%50) || scatter credible pos if sig==1, mcolor(green%80) || scatter credible pos if sig==0, mcolor(green%10)

**Table 3**
sum credible if house==1 & party_code==100
sum credible if house==1 & party_code==200
***Polarization and overlap manually calculated***
sum full if house==1 & party_code==100
sum full if house==1 & party_code==200
***Polarization and overlap manually calculated***

**Load Ike_Years_Senate_Data.dta

**Figure11; graphical elements customized for paper presentation**
sort xd
graph twoway rarea xd zero yd, horizontal legend(off) || rarea xsd zero ysd, horizontal || rarea xr zero yr, horizontal || rarea xrf zero yrf, horizontal || rarea xsdf zero ysdf, horizontal|| rarea xdf zero ydf, horizontal

**Figure 12; graphical elements customized for paper presentation**
graph twoway scatter full pos, legend(off) mcolor(black%50) || scatter credible pos if sig==1, mcolor(green%80) || scatter credible pos if sig==0, mcolor(green%10)

**Table 3**
sum credible if house==0 & party_code==100
sum credible if house==0 & party_code==200
***Polarization and overlap manually calculated***
sum full if house==0 & party_code==100
sum full if house==0 & party_code==200
***Polarization and overlap manually calculated***
***Differences manually calculated***
